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<head>
<title>Fault Tree</title>
<meta name="description" content="A Fault Tree diagram showing gate shapes at each non-root node." />
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<script id="code">
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    function nodeFillConverter(figure) {
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        case "AndGate":
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          return $(go.Brush, "Linear", { 0: "#EA8100", 1: "#C66D00", start: go.Spot.Right, end: go.Spot.Left });
        case "OrGate":
          return $(go.Brush, "Linear", { 0: "#0058D3", 1: "#004FB7", start: go.Spot.Right, end: go.Spot.Left });
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          new go.Binding("angle", "figure", function(f) { return (f === "OrGate" || f === "AndGate") ? -90 : 0; })), // ORs and ANDs should point upwards
        $(go.TextBlock,
          new go.Binding("visible", "figure", function(f) { return f !== "None"; }), // if we don't have a figure, don't display any choice text
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</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>
  <p>
    <em>Fault trees</em> are used to conduct deductive failure analysis in which an undesired state of a
    system is analyzed using Boolean logic to combine a series of lower-level events.
  </p>
  <p>
    This diagram uses a basic <a>TreeModel</a> and <a>TreeLayout</a> to layout nodes in a tree structure.
    The <a>Diagram.nodeTemplate</a> definition allows for text describing the undesirable states and,
    when necessary, a figure indicating an event/gate.
  </p>
  <p>
    The <b>visible</b> property on some of the node template's <a>Shape</a>s is set based on
    whether a figure is chosen for the node in the <a>Model.nodeDataArray</a>. The nodes also
    display a <b>TreeExpanderButton</b> allowing for expanding/collapsing of subtrees.
    See the <a href="../intro/buttons.html">Intro page on Buttons</a> for more GoJS button information.
  </p>
  <p>
    Related to deductive failure analysis is root cause analysis, or RCA. See the <a href="../extensions/Fishbone.html">fishbone layout</a>
    extension page for a diagram format typically used in root cause analysis.
  </p>
  <div>
    <div>
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      <button onclick="load()">Load</button>
      Diagram Model saved in JSON format:
    </div>
    <textarea id="mySavedModel" style="width:100%;height:300px">
{ "class": "go.TreeModel",
"nodeDataArray": [
{"key":1, "text":"No flow to receiver", "figure":"None"},
{"key":2, "text":"No flow from Component B", "parent":1, "figure":"OrGate", "choice":"G02"},
{"key":3, "text":"No flow into Component B", "parent":2, "figure":"AndGate", "choice":"G03"},
{"key":4, "text":"Component B blocks flow", "parent":2, "figure":"Circle", "choice":"B01"},
{"key":5, "text":"No flow from Component A1", "parent":3, "figure":"OrGate", "choice":"G04"},
{"key":6, "text":"No flow from Component A2", "parent":3, "figure":"OrGate", "choice":"G05"},
{"key":7, "text":"No flow from source1", "parent":5, "figure":"Triangle", "choice":"T01"},
{"key":8, "text":"Component A1 blocks flow", "parent":5, "figure":"Circle", "fill":"green", "choice":"B02"},
{"key":9, "text":"No flow from source2", "parent":6, "figure":"Triangle", "choice":"T02"},
{"key":10, "text":"Component A2 blocks flow", "parent":6, "figure":"Circle", "choice":"B03"}
]}
    </textarea>
  </div>
</div>
</body>
</html>
